Hello, everyone
I have connected a SH1106 display to pins D1(SCL) and D2(SDA9 on a Wemos D1mini. The display gets its supply voltage directly from the Wemos via the 3V3 and GND connections. When the Wemos is booted, a text output appears briefly on the display and then I have the problem that the Wemos no longer connects to my WLAN.
If I disconnect the power supply to the display, the Wemos boots without any problems and also connects to my WLAN.
Now one could assume it would be a problem with the power supply. But since the text is output on the display, I rule that out.
Since I could not eliminate the problem, I wanted to check the hardware structure and put the unmodified circuit into operation with EasyESP and set up the display there. Here the text is output without any problems and the WLAN connection is also absolutely stable.
So it can’t be the hardware because I haven’t changed it at all.
I can’t get any further with my problem and hope to find help here.
greeting
dieter